在Oracle 10g中,Flash back家族分为以下成员:Flashback Database,Flashback Drop,Flashback Query(分Flashback Query,Flashback Version Query,Flashback Transaction Query三种) 和 Flashback Table。 1.Flashback Database Flashback Database 功能非常类似于RMAN的不完全恢复,它可以把整个数据库回退到过去的某个时点...
db_recovery_file_dest string /backup/JKEDCON/flash_recovery_area db_recovery_file_dest_size big integer 110G The window retention is 1 day => CONFIGURE RETENTION POLICY TO REDUNDANCY 1; We've found that there are 839 flashback logs: SQL> SELECT * FROM V$FLASH_RECOVERY_AREA_USAGE; FILE_T...
This article describes how to switch archivelog/noarchivelog mode in Oracle,Also it give a short introduction on how to maintain archivelog files using RMAN. Note: In Oracle Enterprise Manager , we can switch to archivelog mode easily.But, It's still useful to know how to implement it using ...
Take care before doing this. Oracle uses the undo tablespace to run flashback queries. So increasing the retention means you’ll need to make this larger to support flashback. This could lead to a big jump in storage requirements. The second problem normally rears(饲养)its head after release...
With the news that some Apple, Facebook, and Twitter employees’ Macs were hacked, and Apple and Oracle’s subsequent software patches, it’s time to revisit the question of whether Java can be used securely. After the Flashback malware attack that occurred in the summer of 2012, I ...
How to enable flashback and create a restore point SQL> Shutdown immediate SQL>Startup mount SQL>Alter databaseflashback on;SQL> Alter database Open; Verify Using SQL>select flashback_on from v$database;SQL>create restore point BEF_UPG guarantee flashback database; ...
Oracle Cloud Infrastructure - Database Service - Version N/A and laterInformation in this document applies to any platform.GoalHow to calculate the size of the generated flashback logs and performance impact of setting FLASHBACK DATABASE ON.This document makes use of View V$FLASHBACK_DATABASE_...
Fast-Start Failover is a technique used in Oracle Data Guard, but without requiring waiting for the failover process to complete.
Add standby redo logs to the standby database. The exact requirements that you must meet depend on your configuration. The steps you follow are identical to those that you followed for the primary cluster.Enable flashback on the standby database. oracle (phys-newyork-1)$ sqlplus '/ as ...
How to Recover Loss of DATA (Without a Backup!) usingOracle Flash Back Query IT WILL WORK ONLY FOR DML DATA LOSS Issue Description: No Flashback Enable No Recyclebin No Restore Point No Backup Developer accidentally deleted all rows from table and then committed too. He want DBA to recover...